Influence of ephemeris error on GPS single point positioning accuracy

• Autorzy: Ma L. , Wang M.

Identyfikatory

DOI

10.2478/arsa-2013-0011

• Języki publikacji: EN

Abstrakty

EN

The Global Positioning System (GPS) user makes use of the navigation message transmitted from GPS satellites to achieve its location. Because the receiver uses the satellite's location in position calculations, an ephemeris error, a difference between the expected and actual orbital position of a GPS satellite, reduces user accuracy. The influence extent is decided by the precision of broadcast ephemeris from the control station upload. Simulation analysis with the Yuma almanac show that maximum positioning error exists in the case where the ephemeris error is along the line-of-sight (LOS) direction. Meanwhile, the error is dependent on the relationship between the observer and spatial constellation at some time period.

Słowa kluczowe

EN

GPS; GDOP; single point positioning; ephemeris error; Yuma almanac; positioning accuracy

• Wydawca: Centrum Badań Kosmicznych PAN ; De Gruyter
• Czasopismo: Artificial Satellites : Journal of Planetary Geodesy
• Rocznik: 2013
• Tom: Vol. 48, No. 3
• Strony: 125--139
• Opis fizyczny: Bibliogr. 5 poz., rys., tab.

Twórcy

autor

Ma L.

• National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China

autor

Wang M.

• National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China

Bibliografia

• George W., and Collins II. (2004) The Foundations of Celestial Mechanics. Case Western Reserve University.
• Kaplan E., and Hegarty C. (2006) Understanding GPS: Principles and Applications. Artech House.
• Langley R. (1999) Dilution of precision. GPS World, Vol. 10, No. 5, 52-59.
• Misra P., and Enge P. (2006) Global Positioning System: Signals, Measurements, and Performance. Ganga-Jamuna Press.
• Warren D., and Raquet J. (2002) Broadcast vs Precise GPS Ephemerides: A Historical Perspective, Proceedings of the 2002 National Technical Meeting of The Institute of Navigation, San Diego, CA, January 2002, p. 733-741.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).